annan



7 Sheets-'-Shee-t 1,.

O. F. ANNAN. Paper Bag Machine. No. 233,591.

Patented Oct. 26,1880.

\Y/ilqasse 5.

N.PETFJIS. PHDTO-UTHOGRAFHEB. WASMINGION. D C.

7'Sheets-Sheet 2.,

G. P. ANNAN. Paper Bag Machine. No. 233,591. Patented Oct. 26, I880.

N. P Emis. PHOYO-UTMOGRAPnm WASHXNGTON 0 C.

7 Sheets--Sheet 4..

G. F. ANNAN. Paper Bag Machine.

No. 233,591. Patented Oct. 26, I880.

wih esses, Irp/er icu. Q

. 7! flwzmmm, 15 041 (F v Jig,

mPETERS. FHOTO-LITNOGRAPHER. WASHINGTON D c.

Y A I 7 Sheets--Sheet 6 C. P. ANNAN. Paper Bag Machine.

No. 233,591. Patentqd Oct. 26,1880

Vilqssses.

lqx/eqtur (Z/M. 9 MM,

Of; M

7- Sheets-Sheet 7. 0. F. ANNAN. Paper Bag Machine. No. 233,59i. PatentedOct.- 26,1880.

NITE STATES ATPENT CHARLES F. ANNAN, OF BOSTON, MASSACHUSETTS, ASSIGNOR,BY MESNE ASSIGNMENT, TO THE EASTERN PAPER BAG COMPANY.

PAPER-BAG MACHINE.

SPECIFICATION forming part of Letters Patent No. 233,591, dated October26, 1880.

' Application filed February 3, 1879.

To all whom it may concern Be it known that I, CHAS. F. ANNAN, ofBoston, county of Suffolk, State of Massachusetts, have invented anImprovement in Paper-Bag Machines, of which the following description,in connection with the accompanying drawings, is a specification.

This invention relates to mechanism for making paper bags having squareor satchel bottoms, and is an improvement upon United States LettersPatent N 0. 132,890, granted to me November 12, 1872, to which referencemay be had.

The machine herein described is adapted to take short paper tubes andconvert them into bags. These tubes are herein shown as being taken oneby one from a pile and delivered to a feed belt or belts, which carrythem forward between feeding-rollers, which are operated intermitt-inglyso as to present the tubes at the proper time to the action of themechanism for forming the diamond and cross folds, my inventionconsisting, essentially, in this latter mechanism.

In this machine, as in the patent referred to, the end of the tube whichis to be folded to form a bottom is held at one side by suction, and isoperated upon at its opposite side by a blast of air, which acts topartially open the tube for the entrance of an opening-finger,constructed as hereinafter morefully described, after which the end ofthe tube opened by the finger is operated upon by the pasting andfolding devices, which complete the bottom of the bag.

My invention eonsists,essentially, in certain devices and combinationsof devices, hereinafter specified at the end of this specification, forforming the diamond and cross folds in the leading end of the tubes toconvert them into bags.

Figure 1 is a right-hand side elevation of my improved machine formaking paper bags,

Fig. 2 is a longitudinal section of the machine, fully showing thefolding devices, which are but partially illustrated in Fig. 1. Fig. 3is a front-end elevation. Fig. 4 is a top view of the bed of themachine. Fig. 5 is a rear-end elevation, partially in section, showingonly the devices for picking up the tubes from a pile sliding bars ofthe revolving frame.

of tubes; Fig.6, a detail of the devices for moving the mechanism whichlifts the tubes singly from'a pile of tubes to present them to thefeeding mechanism. Fig. 7 is a partial side elevation of the left-handside of the machine. Fig. 8 is a top view of the front portion of themachine and the revolving frame, hereinafter described. Figs. 9 and 10are details of the cams for operating the cross or The shaft to of themachine. having upon it the usual fast and loose pulleys and driven inany usual way, has a pulley, b, connected by a belt, 0, with a pulley orshaft, (1, which has a larger pulley, 0, connected by a band,f, with apulley, g, on the shaft of the lowermost of the set of delivery-rollersh at the front of the machine. This shaft a has also a small pulley, i,which, by a band,j, (see dotted lines, Figs. 1 and 7,) is connected witha pulley on a shaft, 1, provided with a series of pulleys, m, (see Fig.2,) over which and over pulleys 12 extend two or more belts, 0. The saidbelts 0, made endless and kept taut by a suitable stretcher or hinder,p, are arranged to travel about and above a portion of the bed (1 of themachine just back of the feeding-rollers r 8, said belts operating tocarry a tube placed upon them quickly forward between the saidfeeding-rollers.

Referring to Fig. 1, an air-pump, t, of any usual construction, operatedby the radius-bar a, set in motion by the link v, actuated by aneccentric on the main cam-shaft w, as shown in dotted lines, hasconnected with it a flexible pipe, 00, which is attached to a picking-updevice, y, (see Fig. 5,) having one or more mouth-pieces, 2 2, the pumpacting to exhaust the air from the said mouth-pieces, so that themouth-pieces, placed upon the uppermost tube 0 of a pile of tubes laidupon the bed q, will cause the tube to adhere to the mouth-pieces,thereby permitting the picking-up device to remove the tubes singly fromthe pile and place them upon the belts 0. This picking- 5 up device issupported upon an arm, a loosely connected with a radius-bar, b pivotedat 0 upon a rack, (1 the teeth of which are engaged by the teeth of apinion, e", on a shaft, f having a pinion, 9 which has a recipro- 1oeating rotary motion imparted to it by a segment, W, on a rock-shaft, tthe segment and rock-shaft deriving motion from a link,j and eccentricupon the main cam-shaft w.

The picking-up device, through the rack 01 is moved longitudinally overthe bed of the machine the necessary distance to carryeach tube from thepile of tubes forward. This picking-up device, in addition toitslongitudinal motion, has imparted to it a rising-andfalling motion bymeans of an adjustable balance-lever, k having its pivot at l fitted toa slot in the lever, and also to a slot, 3, in a stand, m attached tothe bed of the machine.

A grooved sheave, n upon the arm a rests upon and rolls over the uppercurved surface of the balancelever 70 as the picking up device is movedbackward and forward.

When the acking-up device is moved back to engage a tube the sheave nwill rest at the end 5 of the balance-lever, that end of the lever thendescending far enough by gravity to permit the mouth-pieces 2 to restupon the upper tube of the pile, no matter what may be the height of thepile.

When the mouth -pieces 2 have engaged a tube and the rack d andpicking-up device are moved forward the sheave 02 travels over and alongthe balance-leverin the direction of the arrow, Fig. 1, and the frontend, 6, of the lever falls, so as to form with the track 0 acontinuoustrack for the sheave.

WVhen the picking-up device arrives at a point near the rear of thefeeding rollers the air-pump t is operated in a reverse direction tothrow the tube from the month-pieces upon the belt 0.

The upper feed-roller, T, has placed about it two endless belts, 12which extend forward about carrier-rollers g pivoted upon levers rhinged to'stands 8 The said rollers g operate upon opposite edges of thetube after it passes from between the feed-rollers, and, cooperatingwith other bolts, 79, resting in grooves in'the top of the bed q andextended about I the lower feed-ro1ler,s, and the lower delivcry-roller,h, and suitable tension-rollers, (see Fig. 2,) feed the tube forwardinto proper position with relation to the suction and blast apparatus.

When the tube has been moved forward so that its forward end just coversthe holes of the suction -plate 8, the pump a its piston then moving inthe direction of the'arrow near it, Fig. 2, exhausts air through thepipe 20 and chamber 00 and holds that part of the tube resting upon thebed firmly down against the said suction-plate S.

The piston-rod of the pump operated by the links a b from an eccentricon the shaft to, has connected with it a tappet rod, 11 guided at itsrear end in a bracket, 0 This tappet-rod '0 has upon it adjustabletappets 10 11 12.

At the side of the pump-cylinderl have made openings for the admission,at suitable times,

of air at the front and at the rear of the piston-head within the pump,and haveclosed the said openings by means of valves 13 14, having armsor stems which, at suitable times. are operated upon by the tappets 1112 to admit air into the pump-cylinder.

Just before the piston is moved or started in the direction of thearrow, Fig. 2, the tappet 12 rests upon the arm of the valve 14 andopens it for the admission of air at the rear of the piston-head, that,so long as the said valve 14 is held open by the tappet 12, the exhaustwill not operate.

The piston starts to move forward just as the front end of the tube iscoming into position above the plate 8, to be operated upon by suction;but it is essentially necessary that the suction should not operate toactually hold the tube until it arrives at its proper position withrelation to the airblast opening, to be hereinafter described, and forthat reason the tappet 12 is employed to hold the valve open until thetube is in position.

The suction operates to hold the tube firmly until the opening-fingermakes the diamond fold referred to in my other patent, and then thesuction is stopped by means of the tappet 10, which strikes the cam 15on the arm of the valve 14, the said cam being located at the side ofthe said arm, as shown in Fig. 2.

When the piston of the pump a was in its backward position and about tostart forward the tappet 1], which then acted upon the arm of the valve13, held it open for the exit of air from the cylinder in advance of thepistonhead; but as soon as the suction commenced to operate upon thelower portion of the tube to hold it down the tappet 11 ceased to holdthe valve 13 open, and for the balance of the forward motion of thepiston the said piston forced air through the pipe 16 out through theair-blast passage 17 in the blast-mouth 18, causing the blast of air socreated to be so directed against the two layers of paper constitutingthe ends of the tube that the said blast will lift the upper ply orportion of the tube from the lower ply or portion held down by thesuction, thereby affording an entrance for the opening-finger 19 intothe tube to be made into a bag.

The suction-plate 8 and blast-mouth are made adjustable to adapt them totubes of different lengths.

When the tube the end of which is to be acted upon for a bottom is inposition to be operated upon by the suction and blast, fingers d(operated by rods 6 see Fig. 1, and levers f from a suitable cam on theshaft to) are thrown down upon the side edges of the tube, and then thesuction and blast co-operate to separate the paper at the end of thetube for the entrance of the said opening-finger 19, which is connectedwith a movable cross-bar, h of a revolving frame, F, the ends of thecross-bar h being held in radial slots of the revolving frame i suitablepins at the ends ICC of this cross-bar entering a cam-slot, 1 formingpart of a fixed cam-plate, m attached to the frame. The cross-bar h hasalso attached to it two adjustable spring-arms, a which receive thejournals of and support a breakingdown roller, 0 located just at therear of the opening-finger. This revolving frame has a second cross-bar,p guided in radial slots in one of its arms, and pins on the cross-barenter and are actuated by the two grooves L and k to move the cross-bar.This second cross-bar has adjustably attached to it arms 21, whichsupport paste or gum applying rollers 22 and a cross-paster, 23. Pivotedto these arms 21 are arms 24, having thumb-nuts 25 to adjust theirposition with relation to the bed of the machine, so as to permit thebreakingdown plate 26, pivoted upon the said arms, to strike the paperor tube sooner or later.

The pivoted breaking-down plate 26 is acted upon by adjusting-screws 27to maintain the said platein horizontal position. The second cross-bar,11 has also attached to it a pivoted guard-wire, 28, which co-operateswith the folding-blade 29, which forms the first cross-fold.

A third cross-bar, 30, has pivoted upon it a folding guard, 31, for thesecond cross fold, and it has also adjustable arms, which carry asmoothing-roller, 33, and also a folding-blade, 34, to co-operate withthe folding-guard 31 to form the second cross-fold.

The pastingrollers and cross paster have paste applied to them from thebelt or apron 35, which runs in a paste-box, 36.

The finger 19, (see Figs. 11 and 16,) before referred to, is pivotedatits heel upon adjustable arms 37, (see Fig. 2,) connected with thecross-head 71/ has stops 38 39 to control the extent ofits vibrationabout its pivot, has its lower face, 40, curved, as shown in thedrawings, has a hinged nose, 41, has a followingspring, 42, and is helddown against the paper or tube on the bed by a spring, 43.

The hinged nose 41, as it strikes and enters the open tube resting uponthe bed, turns on its pivot to prevent tearing the paper, and enablesthe finger to work in a smaller arc than if the nose were fixed.

As the finger 19 enters the end of the tube its forward end or nose isquickly elevated against the interior or lower side of the upper ply ofpaper, owing to the shape of the portion 40 of the finger and the radialmotion of the cross-bar M, which carries it, such motion of the fingergradually and evenly carrying the tube into the proper form for theproduction of the diamond fold without disturbing that portion of thetube held by and in line with the fingers d", and without undulystraining that portion of the tube which is to receive the firstcross-fold.

As the nose of the opening-finger 19 passes from that portionofthe tubeor partially-formed bottom of the bag which is subsequently to receivethe first cross-fold, the following-spring 42 continues to bear upon theupper surface of the inner ply of the paper within the tube and holdsthe under or lower ply down while the opening-finger in its movementwith the revolvin g frame carries the upper ply so far forward that thepoint of the finger emerges from the tube or passes beyond the edge ofthe upper ply. This following-s 'lring, in its passage from the end ofthe tube, as described, also acts upon the inner face of that portion ofthe fly which is folded by the said finger to receive the firstcrossfold, and insures that the fold across the tube which is to formthe center of the bottom runs straight across the tube from the fingers61 During this movement of the finger 19 the folding-plates 44, whichare shown as surrounding the holding fingers (1 are thrown down uponthat portion of the tube just opened, spread, and laid in position bythe openingfinger 19 for the formation of the diamond fold. The saidfolding-plates 44 are hinged upon a plate, 45, attached to the bed q ofthe machine, and are simultaneously operated by means of links 46,connected with a cross-bar, 47, the link being actuated by a link, 46",of a lever, 48, operated by a groove of acam, 49, on the cam-shaft 'w.The plates 44 having been thrown down upon the paper or tube folded intodiamond form, the further rotation of the revolving frame 7? brings thepivoted breaking-down plate 26 upon that corner of the diamond foldnearest the front end of the machine. As the breaking-down plate 26comes into position and acts upon the corner of the diamond fold thebreaking-down roller 0 occupies a central. position with relation to thediamond fold, and the following-spring 42 rests within the tube and actsto prevent the paper spreading or gaping along the "line of opening ofthe diamond fold or the opening made by the action of finger 19, thesaid opening being substantiallyparallel with the length of the bag.During the further revolution of the revolving frame the breaking-downroller 0 and the breaking-down plate 26 co-operate together to smooththe diamond-fold and fiatten it, leaving the bottom as in Fig. 12. Thepaste-rollers 22 and the cross-paster 23, attached to the secondcross-bar, 19 having been supplied with paste from the belt 35, strikethe diamond fold (shown in Fig. 12) and lay two rows, a of paste thereonparallel with the length of the bag, (see Fig. 12,) and also applypaste, as at 50.

While the pasting devices are in operation the fingers d are lifted fromthe paper. The forward ends or corners of the plates 44 are beveled atthe proper angle to form the starting-point of the first and secondcross-folds, or those designated by the dotted lines 1 1 2 2*, Fig. 12,and are made of a width to correspond with the width of the bottom ofthe bag to be produced, plates like 44, but of different sizes, beingemployed for bags of different sizes. The pasting devices havingoperated and passed from contact with the diamond fold, thefolding-blade 29 for forming the first cross-fold is thrown forwardunderneath that corner of the diamond fold farthest from the front ofthe machine, and at the same time the pivoted folding-guard 28, attachedto the second cross-bar, p ,'strikes the upper portion or the samecorner of the diamond fold, assisting the first-folding blade indefining and making the fold in line with the inclined back ends of thefoldingplates 44. This first-folding blade 29 is pivoted upon links 51,attached at the upper ends of arms 52 of the rock-shaft 53, having ashort arm provided with a roller-stud which is acted upon by the groovedcam 54. As the first-folding blade reaches the ends of its stroke, bothforward and backward, it is lifted or raised from contact with the papertube by means of stationary cams 55 56, forming part of a guide-plate,57. See detail,Fig. 15.) As the first-folding blade 29 is moved forwardthe upper ends of the arms 52 act upon the arms which carry the rollers(1 and lift them from the paper tube.

The corners 0 of the front portion of the first-folding blade 29 areturned upward to prevent the upper ply of paper to receive the firstfold from bulging upward and getting out of shape. As the first-foldingblade is operating to complete the first cross-fold, 1 1", Fig. 13, thethird cross-bar in the revolution of the frame 11 is brought into suchposition with relation to that corner of the diamond fold nearest thedelivery-rollers it that the holding-guard 31 passes above the saidcorner,

after which the second cross-foldin g blade, 34,

passes between the under side of the said corner and the bed q of themachine, and it, during the further rotation of the frame i completesthe second cross-fold, 2 2*, in line with the front edge of the fingers44, after which the smoothing-roller 33 is rolled across the bottom ofthe bag and over both cross-folds, completing the bottom, as shown atFig. 14, after which the plates 44 are elevated to release the bag,preparatory to the commencement of the movement of the feeding-rollers rs and the belts t and roller h, which are set in operation to carry awaythe completed bag or present it to the delivery-rollers, the feeding-rollers r s bringing a fresh tube into position to be folded to form abag.

The groove 70 of the cam-plate m elevates the second 0P0SS-b21I,19 whichcarries the pastin g devices, so as to bring them in contact with thepasting-belt, a projection on each end ofthe cross-bar striking theportion 59 of the cam, thereby at the proper time directing the ends ofthe said cross-bar into the groove 10 The ends of the first and thirdcross-bars are also provided with suitable projections to act upon camportions 60, to prevent the ends of the said cross-bars from enteringthe groove 70.

The pinion 61 on the shaft a engages the toothed wheel 62 upon andimparts motion to the main cam-shaft to. An intermediate or idle pinion,63, on a fixed stud attached to the frame, meshes with the toothed wheel62, and with a pinion, 64, attached to the loose or movable member 65 ofa clutch, the other member of which, 66, is attached to a hub, 67,connected with the shaft 68 of the under feedroller, 8, by means of akey or spline, so as to rotate with the said shaft, but at the same timebe free to slide thereon under the action of a lever, 58, moved by asuitable cam, 69, on the cam-shaft 20.

By the lever 58 the clutch parts 65 66 are engaged and disengaged at theproper times to start the feeding-rollers r s in motion, and continuethem in motion the proper length of time to feed forwarda tube of thelength then being made into a bag.

It is necessary to stop the rotation of the feeding-rollers instantly,or as soon as the forward end of the tube has been placed in properposition to be acted upon by the exhaust and blast, and to do this Ihave attached to the lever 58 a friction-strap, preferably a steelstrap, and have extended the said strap about a friction-drum, 70, onthe shaft of the lower feed-roller. The upper feed-roller, 1', derivesits motion from the lower feed-roller through suitable connecting-gearson each.

The bevel-pinion 81 at the end of the shaft to, through the shaft 72 andsuitable bevelgears, rotates the shaft 73 of the revolving frame 1*,before mentioned, ithavingtwo heads, provided in this instance withthree arms having radial slots, which, under the action of thecam-grooves l k of the cam-plate m move the cross-heads radially as theyand the devices carried by them are rotated to fold and form the bottomof the bag, as before described.

After the tube has been formed into a bag the bag will preferably bepassed through a drying apparatus, substantially such as described inanother application made by me for a patent, andfiled concurrently withthis.

In some of the figures a portion of the frame-work of the machine hasbeen broken away or omitted, to show more clearly certain portions ofthe working parts.

The followin g-blade 34 has its corners turned up, as are the corners ofblade 29.

The cross-paster 23 is attached at the end of a rod, 82, extendedthrough the shaft which supports pasters 22, and its surface or faceextends somewhat beyond the peripheries of the pasting wheels 22. Thecross-paster 23 is, however, thrown or held out in such position by aspring, 83, (see Fig. 2,) that the said cross-paster strikes the cornerof the diamond fold of the bag and holds it down just before and as thepasters 22 run upon and paste the said point of the diamond fold.

I claim 1. The pivoted opening-finger provided with the hinged nose 41,to operate substantially as described.

2. The pivoted opening-finger, curved upon its lower side and providedwith the following-spring 42, to operate substantially as described.

3. The pivoted opening-finger provided with the following-spring and thestops 38 39, to determine the movement of the finger about its pivot,substantially as described.

4. The0pening-finger19,its following-spring, and the yieldingbreaking-down roller 0 combined with the cross-head and revolving frameand devices to move the cross-head radially on the frame, substantiallyas described.

5. The opening-finger 19 and breaking-down roller, combined with thebreaking-down plate 26, substantially asdescribed.

6. The opening-finger and pivoted breakingdown plate, combined withpaste-applying devices 22, to operate substantially as described.

7. The combination, with the cross-bar p and arms 21, of the adjustablearms 24 and breaking-down plate 26, to operate substantially asdescribed.

8. The breaking-down plate, combined with the arms 24 and adjustingdevice, to place the plate in proper horizontal position, substantiallyas described.

9. The folding-blade 29, combined with the guard-wire 28, to operatesubstantially as described.

10. The pivoted holding-guard 31, combined with the second cross-folder,34, substantially as described.

11. The holding-guard 31 and second crossfolder, 34, combined with thesmoothing-roller 33, to operate substantially as described.

12. In a machine to make paper bags,the following instrumentalities: arevolving frame provided with radially-moving cross-heads, a

pivoted finger to open the tube, a breakingdown roller or plate,pasting-rollers, a foldingblade, 29, a guard-wire to co-operate with it,a holding-guard, and a second cross-folder to operate with it, and asmoothing-roller, to operate as and for the purpose set forth.

13. The combination, with the bed q, of the 5 adjustable suction-plate Sand the adjustable blast-mouth 18, substantially as described.

14. The suction-plate 8 and blast-mouth 18, combined with the pivotedopening-finger and i following-spring, to operate substantially asdescribed.

15. The folding-plates 44, beveled at their forward ends, as described,combined with the folding-blade 29 and guard-wire 28, substantially asdescribed.

16. The pivoted opening finger provided with the following-spring 42, tooperate substantially as described.

17. The yielding cross-paster having its face held pressed outwardbeyond the periphery of the pasting device 22, combined with the saidpasting-lever, substantially as described.

18. The revolving frame and cross-head and bed q, combined with ayielding point-holder to strike the point of the diamond fold and holdthe tube in position for the operation of the main pasting devices,substantially as described.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

OHARLES F. ANNAN.

Witnesses:

G. W. GREGORY, L. F. CONNOR.

